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Caching & Redis

Cache-aside, TTL, invalidation, hot keys, and in-memory lookup patterns at scale.

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Caching & Redis medium

How to Cache Function Results in Redis with Python

A Python decorator that caches function results in Redis using TTL, with optional fakeredis for testing without a server.

redis caching decorator
Python 
import redis
import json
import time
try:
    import fakeredis
except ImportError:
    fakeredis = None

from functools import wraps


def cache_redis(cache_key_prefix="cache", ttl=60):
    """Decorator to cache function results in Redis."""
    if fakeredis:
        r = fakeredis.FakeStrictRedis()
    else:
        r…
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